Published and sources checked: 2026-09-25. Scope: the Guiding and Establishing National Innovation for U.S. Stablecoins (GENIUS) Act, Public Law 119-27, read from the enrolled statutory text, the Treasury notice of proposed rulemaking published on 18 August 2026, and a Congressional Research Service overview updated 20 August 2026. The jurisdiction is the United States; nothing here describes any other country's regime, and nothing here is legal, tax or investment advice. The angle is the one a merchant actually has: you accept a coin, so you need to know who may issue it and what you may say about it.
Two clocks, and neither is optional
The law was "Approved July 18, 2025."[1] Its start date is deliberately conditional: "This Act, and the amendments made by this Act, shall take effect on the earlier of" — either "the date that is 18 months after the date of enactment of this Act" or "the date that is 120 days after the date on which the primary Federal payment stablecoin regulators issue any final regulations implementing this Act."[1] Eighteen months from 18 July 2025 falls on 18 January 2027, but final rules can pull the date forward, so a plan built on "the law does not apply yet" is a plan built on one branch of an either/or.
The second clock is the rulemaking. Treasury "proposes to issue regulations to implement section 3 of the Guiding and Establishing National Innovation for U.S. Stablecoins (GENIUS) Act regarding the statutory prohibitions and limitations on payment stablecoin issuance, offer, and sale in the United States", and "Comments on the NPRM must be received on or before October 19, 2026."[2] Until that closes, the edges of the prohibitions are still being drawn — which is a reason to read the statute, not a reason to ignore it.
Only a permitted issuer may issue
The core rule is one sentence: "It shall be unlawful for any person other than a permitted payment stablecoin issuer to issue a payment stablecoin in the United States."[1] For an accepting merchant the mirror image matters more: your exposure runs through whoever issues the coin you hold, not through the exchange, wallet or aggregator that let you receive it. A CRS summary puts the same structure plainly: "On July 18, 2025, the Guiding and Establishing National Innovation for U.S. Stablecoins Act (GENIUS Act) was signed into law as P.L. 119-27."[3]
Operational reading: maintain a short approved-issuer list with the issuer's regulated status, the date you checked it, and the reserve disclosure you were given — the same way you would keep an acquirer or card-network on file. When the coin on a checkout session changes issuer, that is a change review, not a routine substitution.
Reserves, publication, and the fee notice you owe your customer
The statute requires an issuer to "maintain identifiable reserves backing the outstanding payment stablecoins", and to "publish the monthly composition of the issuer's reserves on the website of the issuer".[1] The CRS overview states the ratio without hedging: issuers are required to hold at least one dollar of permitted reserves for every one unit outstanding.[3]
Fees get their own rule, and it binds the party talking to the consumer: an issuer must "publicly, clearly, and conspicuously disclose in plain language all fees associated with purchasing or redeeming the payment stablecoins, provided that such fees can only be changed upon not less than 7 days' prior notice to consumers".[1] If your own checkout passes a conversion or network fee through, decide now whether that number is yours to change on the same seven-day rhythm or on your provider's — and write the answer into your refund policy instead of discovering it during a dispute.
Issuers may not pay yield
One prohibition is absolute and easy to quote: "No permitted payment stablecoin issuer or foreign payment stablecoin issuer shall pay the holder of any payment stablecoin any form of interest or yield (whether in cash, tokens, or other consideration) solely in connection with the holding, use, or retention of such payment stablecoin."[1]
The merchant-facing trap is imitation. If an issuer cannot pay yield on the coin, then any "earn on your balance" figure your product shows is coming from you or from a third party, and it is denominated in a different risk. Keep issuer terms and your own incentive in separate sentences on the page; a reader who conflates them will hold you to the issuer's rule.
If your company is public, you are not the issuer
The statute also draws a line around corporate issuers: "A public company that is not predominantly engaged in 1 or more financial activities, and its wholly or majority owned subsidiaries or affiliates, may not issue a payment stablecoin" unless it obtains the unanimous vote described in the section, and even then only on the statutory conditions.[1] In practice this ends most "we will launch our own coin for checkout" conversations before they start: accept, or become a regulated issuer. It is not a spectrum.
What your pages must not say
The Act also regulates claims about the asset: it is unlawful to represent that payment stablecoins are backed by the full faith and credit of the United States, guaranteed by the United States Government, or subject to Federal deposit insurance or Federal share insurance.[1] Translate that into copy review: "government-backed", "FDIC-protected" and "guaranteed" have no place next to a stablecoin balance, a checkout badge or a pricing page — including when the sentence is technically about a partner bank.
What to do this quarter
Editorial reasoning, not a quoted requirement. Four moves, cheapest first: (1) write the approved-issuer check into your onboarding and your periodic review, with a date field; (2) audit marketing and checkout strings for insured-or-guaranteed language about digital assets; (3) decide your fee-change notice policy and align refund wording with it; (4) track the Treasury docket through the 19 October 2026 comment deadline and the effective-date clause, because the date you must comply by can move earlier than 18 January 2027.[2]
Sources and limits
Checked 2026-09-25. Statutory language is quoted from the enrolled law as published by the U.S. Government Publishing Office; rulemaking language is quoted from the Federal Register notice as retrieved; the CRS product is a legislative summary, not advice. Section numbers refer to the enrolled text. Dates in the effective-date clause are the statute's own; any date computed in this article is arithmetic on that clause, not a regulator's confirmation. No statement is made about whether any particular stablecoin, issuer, exchange or wallet complies — check the current rule text and, where it matters, take advice.
- [1] Public Law 119-27 (S. 1582), GENIUS Act — Approved 2025-07-18 (United States); checked: 2026-09-25.
- [2] GENIUS Act Regulations on Payment Stablecoin Issuance, Offer, and Sale (U.S. Treasury, proposed rule) — Published 2026-08-18, comments due 2026-10-19 (United States); checked: 2026-09-25.
- [3] Stablecoin Legislation: An Overview of the GENIUS Act of 2025 (P.L. 119-27), CRS IN12553 — Updated 2026-08-20 (United States); checked: 2026-09-25.